Experimental characterization reveals stripe-like magnetic domain formation in polycrystalline Terfenol under bias fields, indicating the structural origin of maximum magnetomechanical coupling.
The Bitter colloid technique has been used in an optical study of field-induced domain changes in polycrystalline Tb 0.27 Dy 0.73 Fe 2 (Terfenol). Stripe-like domains were observed to form in the bias-field region where the magnetomechanical coupling coefficient of the material is known to maximise and a tentative interpretation of these domain patterns is given. A new colloid technique has been developed for studying domains using scanning electron microscopy and micrographs are presented which show some fine domain details which have not previously been observed.
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Janio et al. (1987) studied this question.
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